花粉指数
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什么是通用花粉指数 (UPI)？
通用花粉指数 (UPI) 旨在提供一个全球统一的衡量标准，以便比较不同地区的花粉浓度。该指数可帮助对花粉过敏或对花粉敏感的人群根据各种因素评估花粉暴露风险。该模型基于多层模型，可表示花粉水平数据，其中考虑了每种植物模型的浓度、全球使用的许多不同的本地花粉指数 (LPI)，以及不同植物花粉类型的致敏性，以预测每天每立方米的花粉粒数（粒/立方米）。
heatmapTiles 端点会返回可叠加在基础地图上的热图图块。热力图图块显示了给定植物类型（TREE、GRASS 或 WEED）在全球范围内的 UPI。
该指数包含六个类别：
| 值 |
颜色 |
说明 |
|---|
| 0 |
 |
无 |
| 1 |
|
电量非常低 |
| 2 |
|
低 |
| 3 |
|
中 |
| 4 |
|
高 |
| 5 |
|
非常高 |
每个类别都基于特定区域中花粉的具体浓度水平及其对通常出现的过敏症状严重程度的影响，从而全面呈现花粉水平。通过集成 UPI，用户可以比较和评估不同地点的花粉状况。
例如，以下热图图块显示了 TREE 花粉含量，范围从极低到极高：
支持的植物
花粉 API 支持 3 种不同类型的植物：草、杂草和树。由于植物的供应情况取决于实际数据源的测量结果和报告，因此 Pollen API 的植物数据可能会因地点而异。
下表显示了支持的工厂代码及其元数据：
| 工厂代码 |
显示名称 |
类型 |
|---|
ALDER |
Alder |
树形 |
ASH |
白蜡树 |
树形 |
BIRCH |
桦木灰 |
树形 |
COTTONWOOD |
Cottonwood |
树形 |
ELM |
Elm |
树形 |
MAPLE |
Maple |
树形 |
OLIVE |
橄榄绿 |
树形 |
JUNIPER |
Juniper |
树形 |
OAK |
橡木 |
树形 |
PINE |
Pine |
树形 |
CYPRESS_PINE |
柏松 |
树形 |
HAZEL |
灰棕色 |
树形 |
GRAMINALES |
草类 |
草 |
JAPANESE_CEDAR |
日本雪松 |
树形 |
JAPANESE_CYPRESS |
日本柏树 |
树形 |
RAGWEED |
豚草 |
Weed |
MUGWORT |
艾蒿 |
Weed |
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2025-08-31。
[null,null,["最后更新时间 (UTC)：2025-08-31。"],[[["\u003cp\u003eThe Universal Pollen Index (UPI) provides a globally unified scale for comparing pollen levels, aiding in assessing pollen exposure risk.\u003c/p\u003e\n"],["\u003cp\u003eThe UPI utilizes a six-category system (None, Very Low, Low, Moderate, High, Very High) to represent pollen concentration and potential allergy symptom severity.\u003c/p\u003e\n"],["\u003cp\u003eHeatmap tiles visually display the UPI globally for three plant types: Tree, Grass, and Weed, allowing for easy comparison across locations.\u003c/p\u003e\n"],["\u003cp\u003eSupported plant types in the Pollen API include a variety of trees, grasses, and weeds, although availability may vary based on data source and location.\u003c/p\u003e\n"]]],["The Universal Pollen Index (UPI) is a global scale for comparing pollen levels, assessing pollen exposure risk. It utilizes a multilayer model, considering concentration per plant, local pollen indices, and allergenicity to predict pollen grains per cubic meter. The UPI ranges from 0 (None) to 5 (Very High), using heatmap tiles to visualize `TREE`, `GRASS`, or `WEED` pollen. The API supports various plant types, including `ALDER`, `OAK`, `GRAMINALES`, `RAGWEED`, and more.\n"],null,["# Pollen Index\n\nWhat is the Universal Pollen Index (UPI)?\n-----------------------------------------\n\nThe Universal Pollen Index (UPI) is designed to offer a globally unified scale\nfor comparing pollen levels across different areas. The index helps assess the\nrisk of pollen exposure based on various factors for people allergic or\nsensitive to pollen. Based on a multilayer model, it is a representation of\npollen level data that considers the concentration per plant model, many\ndifferent local pollen indices (LPI) used worldwide, and the allergenicity of\ndifferent plant pollen types to predict the number of pollen grains per cubic\nmeter (grains/m3) per day.\n\nThe heatmapTiles endpoint returns heatmap tiles that can be overlaid\non a basemap. Heatmap tiles display the UPI across the globe for a given plant\ntype (`TREE`, `GRASS`, or `WEED`).\n\nThe index consists of six categories:\n\n| Value | Color | Description |\n|-------|-------|-------------|\n| 0 | | None |\n| 1 | | Very Low |\n| 2 | | Low |\n| 3 | | Moderate |\n| 4 | | High |\n| 5 | | Very High |\n\nEach category is based on specific concentration levels of pollen in a\nparticular area and their effect on the severity of allergic symptoms that are\nusually experienced, providing a comprehensive representation of pollen levels.\nBy integrating the UPI, users can compare and assess pollen conditions in\nvarious locations.\n\nFor example, the following heatmap tile shows `TREE` pollen levels ranging from\n**Very Low** to **Very High**:\n\nSupported plants\n----------------\n\nThe Pollen API supports 3 different types of plants: **Grass** , **Weed** ,\nand **Tree**. Because a plant's availability is subject to actual data source\nmeasurements and reports, Pollen API plant data may vary across locations.\n\nThe following list shows supported plant codes and their metadata:\n\n| Plant Code | Display Name | Type |\n| `ALDER` | Alder | Tree |\n| `ASH` | Ash | Tree |\n| `BIRCH` | Birch | Tree |\n| `COTTONWOOD` | Cottonwood | Tree |\n| `ELM` | Elm | Tree |\n| `MAPLE` | Maple | Tree |\n| `OLIVE` | Olive | Tree |\n| `JUNIPER` | Juniper | Tree |\n| `OAK` | Oak | Tree |\n| `PINE` | Pine | Tree |\n| `CYPRESS_PINE` | Cypress pine | Tree |\n| `HAZEL` | Hazel | Tree |\n| `GRAMINALES` | Grasses | Grass |\n| `JAPANESE_CEDAR` | Japanese cedar | Tree |\n| `JAPANESE_CYPRESS` | Japanese cypress | Tree |\n| `RAGWEED` | Ragweed | Weed |\n| `MUGWORT` | Mugwort | Weed |\n|--------------------|------------------|-------|"]]
